Stoker



R. L. BEERs STOKER Filled Jan. 31, 1927 3 Sheets-Sheet 2 D D c a E u a E E D D E D E D MSM lmwup Patented ct. 23, 192.8.

UNITED STATES PATENT OFFICE.

ROYCE L. BEERS, 0F DETROIT, MICHIGAN, ASSIGNOR T0 DETROIT STOKER COMPANY,

OF DETROIT, MICHIGAN, A CORPORATION 0F MICHIGAN.

STOKEB'.

Application led January 31, 1927. Serial No. 164,935.

tion thereof.

t It has heretofore been the practice generally, in the manufacture of stokers, to locate the blower fan at the side or rear of the stoker or at some point remote from the fuel feeding mechanism which is customarily ar-y ranged at the front of the furnace and to locate' a steam engine or other form of power unit somewhere adjacent the stoker and to drive both the' fan and the fuel feeding mechanisni from this engine.

This necessitated the employment of rather extended belts and shafts to drivingly connect the engine with the parts to be operated. In some instances` it hasbeen the practice to drive the blower fan by separate motor and lin otheir installations to substitute a motor lfoi-* the engine to drive both rthe fuel feeding mechanism and the fan. This mechanism, which is generally termed auxiliary equipment, not only utilized space adjacent to the stoker but necessitated association lwith and connection to the Stoker at several points and has been found to be otherwise unsatisfactory. It is, therefore, one of the primary objects of this invention to provide a compact and unified mechanism wherein a power unit such as an electric motor is arranged to drive both the stoker mechanism and the blower fan which latter part' is also arranged at the front of the stolier adjacent to and closely associated with -the l motor and the fuel feeding mechanism. 'With such an arrangement it is possible to mount.

stolzer mechanism.

The lseveral objects, advantages and novel details of construction of this invention willl be made more apparent as this description which the motor is mounted is of little conseproceeds, Aes 'cially when considered in connection wit wherein tion of my invention,

Figure 2 is a longitudinal sectional view through the Stoker, partly in vertical section and partly in elevation.

Figure 3 is a fragmentary front elevational view partly in vertical section and partly in elevation taken substantially on the plane indicated by line 3 3 in Figure 2, and

Figure 4 is a fragmentary horizontal sectional view through the stoker with the hopper removed and taken rsubstantially on the plane indicated by line 4 4 in Figure 3.

While in the drawings one design of under feed Stoker is illustrated somewhat in detail it should be understood that this is for illustrativepurposes only so that the application of my invention may be more readily appreciated. It will be obvious, however, that neither the type of Stoker nor the details of construction thereof in any manner limit the Volved;` In the drawings the reference char- 11 a longitudinally extending retort and 12 the tuyres which are supplied with air from an air vchamber 13 arranged under the retort. The air chamber .opens at the front of the stoker through a passage or opening 14 formed in the front wall 10 of the Stoker and is supplied with air under pressure by blower fan yet to be referred to. The reference character 15 indicates a fuel hop er, 16 a fuel feedingram and 17 a ush ro for feeding fuel longitudinall of t e'retort. The ram 16 is reciprocated y mechanism including a connectin rod 17 and a crank shaft 17 driven throng suitable gearing including a reduction gearing contained in the housing 18, the power therefor being applied to shaft 19, in themanner-.calso to be more fully hereinafter -referred to. l

Mounted adjacent the front Wall of the Stoker, is a power unit here shown as an elecinterpretation of the invention herein inf tric motor 20. This motor may be mounted i' quence as obviously it may be mounted directly upon the front wall of the Stoker or upon a support immediately in front of this wall.

ed by conduit 25 to the air passage 14 which The shaft 23 of the motor is drivingly-v connected to a blower fan 24 which is connectcommunicates with the air chamber 13 to thus supply air under pressure to this chamber. The shaft 23 of the motor 20 extends outwardly therefrom at the other side thereof and is provided with a sprocket wheel'26 which is connected by means of a chain or the like 27 to a sprocket wheel 28 on the driving shaft 19 of the fuel feeding mechanism, the drive gearing of which is contained in the housing 18 as previously described. Thus it will be seen that the motor2() is drivingly connected to both the blower fan and the fuel feeding mechanism and is compactly and closely associated therewith.

The amount of air forced into the air chamber 13 by the blower fan 24 may be controlled yby means of a damper 29 arranged in conduit '25 and mounted upon a shaft 30 which extends vertically through a guide bracket 31 to receive on its end a handle 32. By means of this handle the damper may be adjust-ed and 30 tion of the long driving shaft which was hereconnecting the engine to 35 ent invention,

tofore used to connect the engine to the several s toker mechanisms and the belt gearing the fan. Furthermore cach Stoker, 1n accordance with the prescan be operated as a complete or separate unit and may be individually and independently controlled to regulate the speed of both the fan and Stoker through the speed ofthe motor associated therewith.

As previously mentioned the particular design of stoker herein illustrated and described should not be considered as limiting the scope of the invention involved and as a consequence reservation is made to make such changes in the essential and all of the nonessential details of the invention as may come within the purview ofthe accompanying claims.

What I claim as my invention is 1. The combination with a wall of a Stoker, of a fuel feeding mechanism projecting from said wall at a point spaced from the lower edge thereof, a motor arranged adjacent said wallbelow said fuel feeding mechanism with the shaft thereof parallel with said wall, a blower fan having a conduit connected to said wall and located to one side of said motor below said fuel feeding mechanism and having a driving connection' with the shaft thereof, and means drivingly connecting'the other end of said motor shaft with said fuel feeding mechanism. l

A2. In a Stoker construction, the combination with a wall, of a fuel hopper adjacent the upper portion of .said wall, fuel feeding mechanism projecting forwardly from said wall beneath said hopper and spaced upwardly from the lower edge of said wall, said fuel feeding mechanism including af reduction gear unit, a crank shaft connected thereto and a ram actuated by said crank shaft, a blower fan and motor adjacent said wall in the Space beneath said fuel feeding mechanism, the shaft of said motor being parallel with said Wall and with said crank shaft, means operatively connecting said motor shaft to the reduction gear unit of said fuel feeding mechanism and to said fan, said fan and" fuel feeding mechanism discharging through said wall.

3. In a Stoker construction, the combination with a wall, of a fuel hopper arranged adjacent the upper portion of said wall, fuell feeding mechanism projecting forwardly from said wall beneath said hopper and spaced upwardly from the lower edge of said Wall, a motor arranged adjacent said wall in the space below said fuel feeding mechanism, said motor having a shaft extending parallel to said stoker wall and beyond the motor at both sides thereof, a blower fan located to one side of said motor below said fuel feeding mechanism and having a conduit discharging through said wall` means driving] connecting one end of said motor shaft'to said blower fan and means drivingly connecting the other end of said motor shaft to said fuel feeding mechanism.

4.. In -a stoker construction, the combination with a wall, of a fuel feeding mechanism projecting forwardly from said wall and spaced upwardly from the lower edge of said j Wall, said fuel feeding mechanism including a reduction gear unit, a crank shaft connected thereto and a ram actuated by said crank shaft, a blower fan and motor adjacent saidl wall below said fuel feeding mechanism, the shaft of said motor being parallel with said wall and with said crank shaft, means operatively connecting said motor shaft to the reduction ear unit of said fuel feeding mechanism and to said fan, said fan and fuel feeding11 mechanism discharging through said wa v 5. In a Stoker, the combination with a wall, of fuel feeding mechanism projecting for-` wardlyy from said wall, a blower fan below saidfuel feeding mechanism with the shaft thereofparallel with said wall, said fan havmg aconduit discharging through said wall,

shaft connected thereto and a ram actuwall, said fan having a conduit discharging ated by said crank shaft, a blower fan adthrough said wall, and a motor located withjacent said Wall below said fuel feeding in said space and having means drivingly 10 mechanism within the vertical space defined. connecting the same to said fuel feeding 5 by the said wall and the Vertical plane of the mechanism and blower fan.

outer end of said fuel feeding mechanism In testimony whereof I affix my signature.

and with the shaft thereof parallel with said ROYCE L. BEERS. 

